schofield



May 1, 1923. 1,453 528 H. N. SCHOFEELD COOLER ATTACHMENT FOR ENGINES Filed Sept. 8 1921' 2 She@ts-Shee*c 1 Tin/Emmi a 9 1 1h v. a M

H. N. SCHOFIIELD COOLER ATTACHMENT FOR ENGINES 2 ShwtM-Sheet 2 Filed Sent. 8 1921 flllf llrllldrrlalfal Tnvant UT tented inl 1 6 l a l w rim r'n UNl Halli e i A l nanny NELSON sot-tointerim, i nnnnni'on,

oooiinn roe snort Application filed September 8, 192.1. serial No. 4519,5399.

To all iii/tom it may concern: 7

Be it knownthat I, HENRY N. Sci-tomato,

a citizen of the United States, residing at Frederick, in the county of Frederick and titate of Maryland, have invented certain new and useful Improvements in Jooler rittachments tor Engines, ol? which the iiollowing a specification.

The invention relates to pump attachn'ients, tor autontiobile engines and the like, inthe nature of an engine cooler, for promoting a relatively rapid circulation oi the cooling fluid, ordinarily water, from the bottom of the radiator and thence through the water jacket of the engine. tlaiil fluid returns to the top part of the radiator through the usual connection.

The invention has for its objects to provide a pumping device of the character rcierred to which is adapted for ready at tachment to engines of different kinds, and so having a considerable rang of use, with attendant economy oi. nianu'hicture and application; also to provide a convenient, readily attachable and strong support Il -01 such device vhen combined :lt'or use with an engine; also to accommodate the location and movements oi the tan belt, so that the pumping element may be driven thereby 30 without anytendency tofldisplace the belt.

With such objects in view as well as other advantages which may be incident to the use of the improvements, the invention consists in the parts and combinations thereof hereinafter set forth and clain'ied, with the understanding that the several necessr 1 elements constituting the same may be varied in proportions and arrangement without departin'g tromi the nature and scope oi the invention.

In order to make the invention more clean l-v understood there are shown in the acconr p anying drawings means for carrying the same into practical eliect, without limiting the improvements, in their useful applications, to the particular constructions which, for the purpose of explanation, have been made the subject of illustration. In said d 'awing Figure 1 is a perspective view of a portion of an automobile engine, having; applied thereto a cooling pumping attachment, the same embodying the invention.

Fig. 2 is a longitudinal vertical section on line ll l l of Fig. El ot the pump attachsaid casing.

inent removed from or to, the engine.

Fig. is an end View with the screw cap removed and with the pump shalt snown in section.

F g. i is a cross section on line lV -lfr oi big. 2.

Referring to the drawings, lindicates the 15me, having a cooling water jacket, 2 e radiator, 3 the fan, i the fan shaft, 5 the fan belt, and 6 the circulation water elbow leading from the top part or" the engine water jacket.

'l is cylindrical pump casing forming the main body of the attachment and having within one end a shaft bearing 8 cast with Art the other end, which may be termed the outer end, the lasing 7 is closed. by a cap 9 which screwed into the end oi? the casing and is provided with a shaft bearing 10 and. a stalling box 11.. 12 is L. pump shatt mounted in said bearings 8 and 1t) and terminating at-its inner end within the casing and passing out at its outer end beyond the stutiing box, where it has fixed thereon a belt pulley 13 arranged to be in before application .line with the tan belt so as to be driven thereby, asindicated in Fig. .l. 14: is the pumping or water-circulating element, prel erably in the term of a screw shaft 12 near the bearing 8. 15 a waterconducting branch from the casing '4" and est therewith and extei'iding down to within convenient distance oi? the radiator pipe 'li, with which it is connected by means of a rubber or other flexible pipe section 1i" which is clamped in place in the usual manner of connecting such sections. W hen the engine and tan are in operation therefore, the pumping screw ll draws the cooling iiuid from the lower part of the radiator by the pipe 16 and branch 15 and propels it rcarwardly towards the entrance of the water jacket, which is through the jacket elbow 18, the same being tightly secured to said jacket by bolts 19. The rear end of the casing 7 is formed beyond the bearing 8 with a short extension or branch 20, which, when the pumping attachment is put in place, will be within easy connecting distance of the jacket elbow 18, with which it is united by a flexible pipe section 21 and clamps 22. The casing is formed with an upwardly ext nding' lug to which is bolted a short casing-supporting bar 24- and the lined on the (ill rear end of this bar has an eye through which is caused to pass one of said bolts 19, as seen in Fig. 1. At the exit of the water jacket is secured the said elbow 6 by bolts 25, and by one of said bolts is attached a depending casingsupporting bar 26 the lower end of which is secured by a bolt 27 to a lug 28 cast on and projecting from the rear side of the casing 7.

By the above construction and arrangement of parts the pumping attachment is self-contained, capable of manufacture, as a unitary device, in quantity and economically, and which can be applied to large numbers of engines now in use, so as to replace the lower connection between the radiator and water jacket, which connection has no water propelling means, or one which is not satisfactory,

The shaft 12 is mounted to be longitudinally movable, so as to accomodate itself to the location of the fan belt, and to its movements, so that there will be no tendency of the pulley 13 to displace the belt from its other pulleys. Said shaft 12 is freely movable endwise in its bearings, Within limits, the pump screw abutment against the bearing 8 acting as a stop in one direction, and a collar 29 fixed on the shaft and adapted to abut against the cap 9 serving as a stop in the other direction, these stops limiting respectively the rearward and forward movements of said shaft 12.

\Vhat is claimed is 1. In a cooler for engines. the combination of a horizontal tube constituting a casing and extending longitudinally of an engine at one side thereof, said tube being provided adjacent its front end with a depending branch outlet, a longitudinal shaft slidably mounted in the said tube and extending substantially the entire length of the same concentrically thereof and provided at the rear end with a rotary pumping element located within the tube, means for limiting the longitudinal movement of the shaft, means for connecting the rear end of the tube with the water jacket of the engine and the outlet branch with the radiator, and a belt pulley fixed on said shaft and adapted to be engaged by the fan belt of the engine, the longitudinal movement of the shaft permitting the belt pulley to adjust itself automatically to the fan belt.

2. In a cooler for engines, the combination of a horizontal tube constituting a casing and extending longitudinally of an engine at one side thereof and provided adjacent its front end with a branch outlet. said tube having an interior bearing at its rear end and provided at its front end with a removable cap having a bearing, a shaft extending longitudinally of the said tube and slidably supported in the said bearings concentric with the said tube, the front end of the shaft projecting outwardly beyond the cap, a rotary pumping element consistimg of a screw mounted on the rear portion of the shaft within the said tube, adjustable means mounted on the shaft and operating with the pumping element to limit the slidable movement of the shaft, means for connecting the rear end of the tube with the water jacket of the engine and for connecting the branch outlet with the radiator of the engine, a belt pulley mounted on the projecting front end of the shaft and arranged to receive the fan belt of the engine, the longitudinal movement of the shaft permitting the pulley to adjust itself automatically to the fan belt.

In testimony whereof I affix mv si nature- HENRY NELSON soHoFfiaLu 

